Three nine-year-old friends in Pennsylvania have taken it upon themselves to raise money for their local police department to be able to acquire ballistic vests for their officers.

According to CBS News, the three kids—Aubrey MacWilliams and twins Danny and Bella Carroll—were able to raise $200 and a local insurance company matched their donation with a $200 check for Vest a Cop.

Officer Henry O'Neill, a 19-year veteran of the force, is the grateful recipient of the donated vest.